Browser Extensions · head to head
ProWritingAid vs Web Developer

ProWritingAid
Browser Extensions
AI writing assistant and grammar checker
- From
- Free
- Rated
- -
The short version
- Each has a real cost: ProWritingAid free plan limited to 500 word count with only 2 report runs per day; Web Developer the Web Developer browser extension is licensed GPL-3.0 per its GitHub repository (github.com/chrispederick/web-developer), which states 'All files are distributed for free under the terms of the GNU General Public License,' confirming it has no vendor pricing model to compare.
- They diverge on capability: ProWritingAid covers Grammar checking, Web Developer covers CSS inspection.
- Prices and features above were last checked on 30 August 2026.
Where they differ
Only the attributes on which ProWritingAid and Web Developer actually diverge.
| Attribute | ProWritingAid | Web Developer |
|---|---|---|
| Pricing model | freemium | free |
| Platforms | Web, Windows, Mac, Chrome, Firefox, Edge | Chrome, Firefox, Edge, Opera |
| Founded | 2013 | 2003 |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in ProWritingAid
- Grammar checking
- Style analysis
- Readability reports
- Plagiarism checker
- Safari support
Only in Web Developer
- CSS inspection
- Form debugging
- Image analysis
- Element outlining
- Opera support
Both cover
- Chrome support
- Firefox support
- Edge support
What people use each for
The jobs each tool is most often brought in to do.
ProWritingAid
- Grammar and style checking for writers and authorsnot Web Developer
- Story planning and structure analysisnot Web Developer
- Character and manuscript analysis for fiction writersnot Web Developer
- Integration with Microsoft Word, Google Docs, Scrivener, and Notionnot Web Developer
Web Developer
No use cases recorded yet. See the Web Developer review.
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
ProWritingAid
- Free plan limited to 500 word count with only 2 report runs per day
- Advanced AI features (50 Sparks per day, Chapter Critiques) only in Premium Pro tier
- Desktop apps for Mac and Windows; iOS/Android support limited to specific integrations
- Yearly subscriptions significantly more cost-effective than monthly (67% savings)
Web Developer
- The Web Developer browser extension is licensed GPL-3.0 per its GitHub repository (github.com/chrispederick/web-developer), which states 'All files are distributed for free under the terms of the GNU General Public License,' confirming it has no vendor pricing model to compare.
Pricing, plan by plan
ProWritingAid
Free- FreeFree
- Basic grammar and spelling checks
- 500-word limit per check
- 2 report runs daily
- Premium$30/month
- Unlimited word count
- Unlimited rephrases
- 5 Sparks daily
- Premium Pro$36/month
- All Premium features
- 50 Sparks daily
- 3 Chapter Critiques daily
Web Developer
Free- FreeFree
- CSS tools
- Form tools
- Image tools
Which should you pick?
Choose ProWritingAid if
- You need grammar checking.
- You want to start without paying.
- You work on Web, Windows, Mac, Chrome, Firefox, Edge.
- You also want style analysis.
Choose Web Developer if
- You need css inspection.
- You want to start without paying.
- You work on Chrome, Firefox, Edge, Opera.
- You also want form debugging.
Questions people ask
- Is ProWritingAid or Web Developer better?
- Neither clearly leads. ProWritingAid starts at Free and Web Developer at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, ProWritingAid or Web Developer?
- ProWritingAid starts at Free and Web Developer at Free.
- Does ProWritingAid or Web Developer run on more platforms?
- ProWritingAid runs on Web, Windows, Mac, Chrome, Firefox, Edge. Web Developer runs on Chrome, Firefox, Edge, Opera.
- Can I use ProWritingAid for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is ProWritingAid best used for?
- ProWritingAid is most often used for grammar and style checking for writers and authors, story planning and structure analysis, character and manuscript analysis for fiction writers, integration with microsoft word, google docs, scrivener, and notion. Of those, grammar and style checking for writers and authors and story planning and structure analysis are not what Web Developer is typically brought in for.
- What can ProWritingAid do that Web Developer cannot?
- ProWritingAid covers Grammar checking, Style analysis, Readability reports, Plagiarism checker. Web Developer covers CSS inspection, Form debugging, Image analysis, Element outlining. Both handle Chrome support, Firefox support, Edge support.
Answered from the vendors’ own pages
ProWritingAid: How much does ProWritingAid cost?
ProWritingAid is free. Premium plan costs $30/month ($120/year), and Premium Pro costs $36/month ($144/year). Both yearly plans offer significant monthly savings. Lifetime options cost $399 (Premium) or $699 (Premium Pro).
SourceProWritingAid: Is there a free version of ProWritingAid?
Yes. The free plan includes basic grammar and spelling checks with a 500-word limit per check, 2 report runs daily, 10 rephrases daily, and 3 Sparks daily.
SourceProWritingAid: What is the difference between Premium and Premium Pro?
Premium ($30/month) includes 25+ analysis reports and 1 Chapter Critique daily. Premium Pro ($36/month) adds 50 Sparks daily, 3 Chapter Critiques daily, live workshops, and group critique sessions.
SourceProWritingAid: Does ProWritingAid offer a refund guarantee?
ProWritingAid offers a 3-day money-back guarantee for yearly and lifetime subscriptions. Monthly plans have no refund option.
SourceRelated pages
More on ProWritingAid
More on Web Developer
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